@rowuk said in Tough Decision to make:
I very much disagree with the idea of a mouthpiece transforming an instrument...
Perhaps a mouthpiece choice for a specific horn may not transform the horn, but the right mouthpiece-horn choice can optimize the performance of the horn.
I experienced one exception however. One day during a lesson with Claudio Roditi, he handed me a horn he said he just purchased at a street sale for $75. I played it, and handed it back and said, "Claudio, it sounds like a $75 horn." He then changed the mouthpiece for me and handed me the same horn back. It played with exceptional tone an resonance, yes, it was a horn transformed.
Claudio then gave me a lesson in backbore size, and how the correct gap choice can optimize the height of the sound wave amplitude as it exits the mouthpiece and is transmitted to the leadpipe. At the end of that lesson, we took a cab ride to Jarome Callet's studio, where he hand lathed the backbore of one of his mouthpieces, (it took him 3x to go back and forth to the lathe) until that mouthpiece made my Olds Recording sing, and play more open and better than it have ever sounded. At the time I was playing regularly at a club on Lexington Ave and needed a mic when playing with my sextet. After that day, I no longer needed or used the mic. So for my Recording, maybe not "transformed" but surely, enhanced.